Philip medaet



(Nd Model.)

- P. MEDART.

Belt Pulley.

No. 241,555. 7 Patented May l7, i881.

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N. PETERS- PhMoLltMgnphcn Walhirvgtnn. DC.

UNITED STATES PATENT OFFICE.

PHILIP MEDART, 0F sr. LoUIs, MISSOURI, ASSIGNOR 0F ONE-HALF TO WILLIAM MEDART, or SAME PLAoE.

BELT-PULLEY.

SPECIFICATION forming part of Letters Patent No. 241,555, dated May 17, 1881.

1 Application filed January 31, 1881. (No model.)

To all whom it may concern:

Be it known that I, PHILIP MEDART, a citizen of the United States, residing at St. Louis, in the State of Missouri, have invented certain new and useful Improvements in Belt- Pulleys; and Ido hereby declare that the following is a full, clear, and exact description of the same, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, forming a part of this specification.

This invention has for its object the formation of a belt-pulley of a light, strong, and durable construction; and this invention consists, first, in the formation of the rim of the pulley wholly of paper, either in the form of paper-board, papier-mach, vulcanized fiber, or other form of paper-board met with in the art; secondly, in the provision, in connection with the rim of a belt-pulley, of a stiifeningring of metal, paper, &c., placed at the edges of the rim, so as to impart additional stiffness to the same; thirdly,in the formation of a beltpulley with arms of wrought meta-l cast into the hub, with their outer ends bent so as to form bracket-lugs for the attachment of the rim, as will hereinafter more fully appear; fourthly, in certain details of construction, as will hereinafter more fully appear.

In the drawings, Figure 1 is a side elevation. Fig. 2 is a transverse axial section.

In the drawings, A represents the hub, in which are cast the inner ends of the flat metal arms B of the pulley. These arms are arranged alternated or staggered, as shown, so as to allow of their being cast in the hub during the process of casting the same. These arms are bent at their outer ends, so as to form bracket-lugs b, for the attachment of the rim 0 by the rivets c, the lugs b being arranged crosswise to the rim, as shown, so as to form a wide support for the same.

D are stifiening-rings arranged at the edges of the rim O,for imparting stilfness to the same. This feature is very useful and valuable in cases where a pulley is required to be constructed with a very wide rim.

The rim 0 is made wholly of paper, in any of the forms met with in the trade, such as paper-board, plain or chemically treated, vulcanized fiber, 8:0. This materialIhave found forms a very evenly balanced rim, and at the same time is cheap, durable, and effective.

In constructing my improved pulley the arms are cast in the hub in a straight form. The spider thus formed is placed in a former, which bends the lug b concentric with the axis of the pulley, after which the rim is bent into the required circular shape and attached to saidlugs by rivets 0, so as to complete the on-wheels have been constructed with alternated arms, such construction being shown in Patent No. 19,951, granted April 13, 1858, to B. A. Rogers. I am also aware that prior to my invention completed pulleys have had their rims faced or covered with strips of paper to prevent the slipping of belts, &c. I therefore do not claim such construct-ions or combinations, broadly; but,

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A rim for belt-pulleys formed wholly of paper, substantially as herein described, and for the purpose set forth.

2. A rim for belt-pulleys provided with stiffening-rings D at its edges, substantially as described, and for the purpose set forth.

3. A belt-pulley composed of a rim formed wholly of paper, and a rimless spider having bracket-lugs at the ends of its arms for the attachment of the rim, substantially as described and set forth.

4. A belt-pulley composed of a rim, 0, and a rimless spider consisting of a cast-metal hub, A,and arms B, having their outer ends bent so as to form bracket-lugs b, for the attachment of the rim, as described, and for the purpose set forth.

5. A belt pulley composed of a rim, 0, formed wholly of paper, and a rimless spider consisting of a cast-metal hub, A, and arms B, arranged in an alternated direction, and having their outer ends bent so as to form bracket-lugs b, for the attachment of the rim, as described, and for the purpose set forth.

Signed at St. Louis, in the State of Missouri, this 26th day of January, 1881.

PHILIP MEDABT.

In presence of-- WM. MEDART, RoBr. BURNS. 

